The U.S. health care system has undergone many changes in its history

Description

Please cite and use in-text citation pertaining to the references and please use reference no more then 5 years back. Please separate topic with the appropriate heading.

Please type essay according to below :

The U.S. health care system has undergone many changes in its history.

What do you believe is the greatest achievement that the health care industry has made from both the patient and provider perspectives? Why?
Do you believe that there is too much or too little redundancy in our health care delivery system? Where does most of the redundancy occur? Where should we have more redundancy (second opinions)?